Describe what is meant by the term magnetic field.
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16.1 Introduction and key concepts
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End of chapter exercises
Textbook Exercise 15.1
Use words and pictures to explain why permanent magnets have a magnetic field around them. Refer to domains in your explanation.
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What is a magnet?
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What happens to the poles of a magnet if it is cut into pieces?
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What happens when like magnetic poles are brought close together?
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What happens when unlike magnetic poles are brought close together?
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Draw the shape of the magnetic field around a bar magnet.
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Explain how a compass indicates the direction of a magnetic field.
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Compare the magnetic field of the Earth to the magnetic field of a bar magnet using words and diagrams.
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Explain the difference between the geographical north pole and the magnetic north pole of the Earth.
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Give examples of phenomena that are affected by Earth's magnetic field.
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Draw a diagram showing the magnetic field around the Earth.
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